At least seven bodies were recovered after an overcrowded trawler sank in a river in Bangladesh Friday with about 150-200 people on board, a fire brigade official said.The ferry capsized in Payra river in Barguna district after developing cracks following a collision with a submerged island, Xinhua quoted the official as saying on condition of anonymity.According to the official, many passengers were able to swim ashore after the accident at about 1.15 p.m. But the official could not tell the exact number of missing passengers.As ferry services in Bangladesh do not maintain lists of passengers, no one was able to tell exactly how many passengers a ferry carries.Earlier in the day, five bodies were recovered and two people were missing.